Interesting post! I will have to balance my checkbook and get back with you!
On a more serious note, as a former DQ Asst. Manager and Brazier Chef
(a man of many hidden talents! Boy, I could push a mean mop back in those days!), I would never purchase soft-serve out of a machine like that. If the mix is not kept at the correct temperature---
bacteria city
!!!
We cleaned the spigots periodically throughout the day to insure that we never had that problem. Additionally, we never left mix in the machines overnight. The machines were emptied nightly, sanitizer was run through the lines and machine and then the machine barrel was removed and the auger and internal parts were sanitized. Then we ran sanitizer through the lines in the morning before we filled the machines with mix.
Tim
